1-2
In case of a Combo port, only one interface (either the optical port or the electrical port) is active at a
time. That is, once the optical port is active, the electrical port will be inactive automatically, and vice
versa.
Initially Configuring a Port
Table 1-2
Initially configure a port
Operation
Command
Remarks
Enter system view
system-view
—
Enter Ethernet port view
interface interface-type
interface-number
—
Enable the Ethernet port
undo shutdown
Optional
By default, the port is enabled.
Use the
shutdown
command
to disable the port.
Set the description string for the
Ethernet port
description
text
Optional
By default, the description
string of an Ethernet port is null.
Set the duplex mode of the
Ethernet port
duplex
{
auto
|
full
|
half
}
Optional
By default, the duplex mode of
the port is
auto
(auto-negotiation).
Set the speed of the Ethernet
port
speed
{
10
|
100
|
1000
|
auto
}
Optional
z
By default, the speed of an
Ethernet port is determined
through auto-negotiation
(the
auto
keyword).
z
Use the
1000
keyword for
Gigabit Ethernet ports only.
Set the medium dependent
interface (MDI) mode of the
Ethernet port
mdi
{
across
|
auto
|
normal
}
Optional
Be default, the MDI mode of an
Ethernet port is
auto
.
Configuring Port Auto-Negotiation Speed
You can configure an auto-negotiation speed for a port by using the
speed auto
command.
Take a 10/100/1000 Mbps port as an example.
z
If you expect that 10 Mbps is the only available auto-negotiation speed of the port, you just need to
configure
speed auto
10
.
z
If you expect that 10 Mbps and 100 Mbps are the available auto-negotiation speeds of the port, you
just need to configure
speed auto
10 100
.
